Working together
Image credits are shown in the lesson beside each illustration. Colours distinguish structures; blue vessels do not mean blood is blue.
Team Challenge: 20-question bank. For the four-minute slot, select about four questions and discuss the reasons. Use the rest for review, or replace 12–16 minutes of earlier discussion with a full round. Optional page 01 facts only enter the round after being taught.
Original practice inspired by Cambridge OCR GCSE Biology A (Gateway Science), J247 · specification v4.0 (August 2026): B1.2g enzyme action; B1.3 respiration; B2.1–B2.2 exchange and transport; B3.1 coordination. Familiar digestive, skeletal and muscular examples apply these ideas. These are teacher-written questions, not official OCR exam items.
40 minutes: Meet the systems 10; a system 5; oxygen delivery 5; food to cells 5; make a move 5; depend on each other 4; team challenge 4; exit 2.
Use short explanations, then invite a pupil to point, choose or talk. In chapter 01, spend about a minute per system and use the remaining time to compare two systems. Extra detail is optional and can replace discussion time. Do not attempt every extension in one lesson.
Start with the whole body and familiar jobs: moving, breathing and eating. In chapter 02, use these examples to introduce the common goal. Ask what each part contributes. Revisit the same sentence: “The … system depends on the … system because …”. Parts can belong to more than one system; these are useful groupings, not isolated boxes.
Illustrations show selected structures, not every part of each system. Chapter 01 uses whole-body views for circulation, nerves, skeleton and muscles. Later activities use close-ups of the heart, ribs and upper limb. Detailed labels are for reference, not a vocabulary test. Enlarge a picture when helpful.
Distinguish digestion, breathing and cellular respiration. The heart pumps blood; it does not make oxygen. Both organs and their cells need supplies from other systems. Avoid breath-holding tasks; every activity can be completed seated.
Images and anatomy references: National Cancer Institute · SEER Training. School lesson text and activities are original adaptations. Illustration credits are shown beside each image.
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